Mechanical interlocking device and switch cabinet thereof

The invention relates to a mechanical interlocking device and a switch cabinet thereof. The mechanical interlocking device comprises a first interlocking mechanism, and the first interlocking mechanism comprises a first body which is fixed on a separation part and is located in a first containing space, and a first linkage assembly which is arranged on the first body; the first linkage assembly comprises a first touch pressing part and a first locking part linked with the first touch pressing part, at least part of the first touch pressing part extends out of the first containing space, at least part of the first locking part extends into the path of the wire inlet cabinet trolley entering and exiting the second containing space in the second direction, and the first direction intersects with the second direction; and the first touch pressing part can move relative to the first containing space and is linked with the first locking part when the metering cabinet door is closed, so that the first locking part m